Add Hélio Cordeiro as author name and latex_header

I should add the latex_header before and I forget it.

Author: ryukinix

index.org

@@ -1,9 +1,10 @@
 #+SETUPFILE: org-theme/setup/long.setup
 
-#+AUTHOR: Manoel Vilela, Lucas Vieira
+#+AUTHOR: Manoel Vilela, Lucas Vieira, Hélio Cordeiro
 #+DATE: <2018-02-10 Sat>
 #+TITLE: Common Lisp Brasil
 #+LANGUAGE: bt-br
+#+LATEX_HEADER: \usepackage[]{babel}
 #+OPTIONS: toc:nil
 
 #+BEGIN_ABSTRACT